Murray hinckley spear



UNITED STATES PATENT OFFICE.

MURRAY HINCKLEY SPEAR, OF LONDON, ENGLAND.

RU LING DEVICE.

SPECIFIGA'IIW forming part of Letters Patent No. 404,315, dated May 28, 1889. Application filed April 25, 1888. Serial No. 271,842- (No model.) Patented in England March 15, 1888, No.{i,036.

To all whom it may concern:

Be it known that I, MURRAY HINOKLEY SPEAR, engineer, a subject of the Queen of England, residing at London, in England, have invented certain new and useful Improvements in Ruling Devices, (for which I have received a patent in England March 15, 1888, No. 4,036,) and I do hereby declare that the following is a full, clear, and exact desciiption of the same.

Owing to the expense and trouble attending the use of the ordinary ruling-pens used by printers for ruling a number of parallel lines, an apparatus having a number of steel disks side by side, upon the same axis was devised, but has had but slight success from the fact that the steel being rigid Would not accommodate itself to the paper, and would not absorb the ink; consequently the disks would not carry sufficient. ink to produce good lines, and printersink could not be used, a kind of aniline ink or dye being used instead.

' Now, by experiments I have found that by making the disks or rules of some substance of a different nature from steel, and which, while presenting a sufficiently rigid or inflexible surface to produce a good line, will nevertheless give sufficiently to accommodate inequalities of surface or material in the paper, and will so far absorb or take the ink that a proper supply can be carried by the disk or rule, the difficulty of the steel disks may be got over and a satisfactory result obtained.

It will at once appear that various materials may be used; but the best for the purpose whicl I have so far found is vulcanized fiber, made sulIicient-ly firm and solid not to give too much While the lines are being ruled, but sufficiently fibrous to take or hold the printers ink, which simple india-rubber will not do.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is- A disk for ruling purposes adapted to carry the marking compound, made of vulcanized fiber or equivalent material which is sufficiently fibrous to take the marking compound, and firm enough to form the perfect edge to give the impression 'to form theline, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of the two subscribing witnesses.

MURRAY HINCKLEY SPEAR.

\Vitnesses:

- J NO. DEAN,

T. J. ORMANS, Both of 1 7 Graccchu'rch Street, London. 

